Flue-expander.



No. 739,160. PATENTED SEPT. 15.1903.

. J. W. FAESSLER. FLUE EXPANDER.

APPLICATION FILED .TULY 9. 1903.

N0 MODEL.

WITNESSES: //v VENTOI? 4 Jam 714 7249 05677 A TTOHNE YS.

No.739,160. I I v UNITED STATES Patented September 15, 1903.

PATENT OFFIGE.

JOHN WILLIAM FAESSLER, OF MOBERLY, MISSOURI.

FLUE-IEXPIANDER.

SPECIFICATION forming part of Letters Patent No. 739,160, dated September '15, 1903.

Application filed July 9,1963. s al No. 164,799. '(No model.)

To all whont it may concern.-

Be it known that 1, JOHN WILLIAM FAESS- LER, residing in Moberly, in the countyof Randolph and State of Missouri, have invented certain new and useful Improvements in Fine- Expanders, of which the following is a specification.

My invention is an improvement in the class of boiler-flue expanders in which a tapered.

pin or mandrel isemployed in connection with a series of surrounding rollers and a slotted box which incloses the latter and is adapted to be inserted in the end of the flue. pansion is produced by driving the mandrel in, whereby the rollers are forced out laterally and correspondingly through the slots of 'the box.

2 is a cross-section on the line 2 2. of Fig. 1.

Fig. 3 is a perspective vie-w of th'e roller-box and an attachment thereof whereby it is held in the cylindrical body or collar of the tool. Fig. 4 is a perspective view of the body or collar. Fig. 5 is a side View of a pin employed for disconnecting the roller-box from the collar.

1 indicates the tapered mandrel proper, and 1 the enlarged head thereof, which is provided with transverse holes for a rod for turning it. The tapered portion of the mandrel passes through the roller-box 2, having a series of radially-longitudinal slots in which rollers 3 are arranged and adapted to move in and out,-according as the'mandrel is adjusted. The said box 2 is provided with an enlarged circular head or collar 2.

4 indicates the cylindrical body or collar of the tool. The same is provided interiorly with a circular rib 4, which is in turn provided with a groove 4. It will be noticed that this rib 4 is located nearer one end of the body or collar 4 than the other. It is preferably located a distance from one end of The eX-.

'in Fig. 1.

- the collar 4 equal to the-thickness of the head 2 of the roller-box 4, so that when the parts are fitted together, as shown in Fig. 1, the said head 2 is flush with the adjusting end of the collar 4.

The means for detachably connecting the roller-box with the collar is a pin 5, (see Fig.

3,) the same consisting of an enlarged body and a reduced portion formed on the outer end of the same. The body fits in a corresponding radial socket or bore formed in the roller-box 2, and the reduced portion fits and is adapted to slide easily in the groove 4 of coil-spring 6, which serves to hold it duly engaged with the groove in the rib 4*, as shown It will be seen that the pin perm'its the parts 2 and 4 to rotate freely upon the collar 4. The pin 5 is seated upon the each other, but prevents their longitudinal Y movement. It is apparent that by depressing the pin 5, so that its reduced end is clear of the groove 4 in the collar 4, the box 2 may be slidout of andthus removed fromthe collar 4. vThis is effected by inserting the pin- 'the said hole 7, and for this purpose the ends of the collar 4 and the head 2 of the rollerbox are provided with radial grooves or lines 9,'Figs. 3 and 4, which when brought into coincidence indicates the parts are in proper position for efiecting detachment. The insertion of the pin depresses the spring-pin 5 andenables the parts to be easily detached. The object of this detachment will be better understood from the following statement. Boiler-fines are sometimes cutoff longer than necessary to be used before putting them into the boiler, and consequently when this is done they project too far outside of the flue-sheet, and hence the operator is prevented from proceeding to roll and expand the fines in the boiler-heads. In other words, the projection of the fines from the heads prevents the expander from being inserted in the flue far enough to allow the rollers to be arranged in line with the inside flue of the sheet or, in other words, arranged at the proper point for expansion. It will be seen that when the body or collar 4 is arranged as shown in Fig. l the roller-box 2, with its rollers 3, cannot be inserted in the flue to the same length as would be practicable if the collar 4 were reversed in position, since it would then project a less distance over the box and rollers, owing to the fact that the grooved rib 4 is located nearer the left-hand end of the collar than the other. By detaching the roller-box and reversing it and the collar 4 relative to each other the described adjustment may be readily made. In such case it is apparent that the enlarged head 2 of the roller-box will be in contact with the other side-to wit, the right-hand sideof the rib 4. My improved flue-expander is thus adapted to be used with a collar at all times and yet to be applied and operate upon fines of diiferent lengths. In other words, the collar being reversible and constructed in the proportions indicated is adapted for use with fines cut one-half inch too long. When lines are more than one-half inch too long, the collar 4 may be entirely removed. when the roller-box has been detached from the collar and the latter reversed, it is apparent that upon reversing the roller-box in the collar the spring-pin 5will strike the rib 4 and that it must be pushed back into its socket in order to allow it to slide under the rib and into the groove thereof. For this purpose I provide the collar 4 with radial holes 7, (see Figs. 1 and 4,) which are located on opposite sides of the rib 4. A pin is inserted through either of these holes for depressing the spring-pin 5, as will be readily understood, so that the spring-pin will pass under the rib as required.

The body or hea 2 of the roller-box 2 prevents dust and dirt from entering between the collar and head, and thereby lengthens the life of the tool. Since the collar 4 always extends over the rollers more or less, it pro vents them from falling out of the box 2 when the expander is being handled outside of the flue, also when the expander is being inserted in the flue.

As thus constructed the expander is composed of few parts and is very durable and efficient. The parts are made of tool or machine steel.

What I claim is 1. In a flue-expander of the class specified, the combination, with the roller-box having a circular enlarged head, of the surrounding body or collar having an internal rib located nearer one end of the collar than the other,

the said collar having the same internal diameter on both sides of the rib, to adapt it to receive the head of the box at each end, and means for detachably connecting the roller-box and collar, substantially as described.

2. Theimproved flue-expander comprising a tapered mandrel, a slotted roller-box having an enlarged circular head and a series of longitudinal slots, rollers arranged in said slots and adapted to project therefrom, and a reversible body or collar surrounding the roller-box and having an internal rib which is grooved and located nearer one end'of the collar than the other, and a spring-supported pin held in the roller-box and engaging the groove of the collar, the collar being provided with a radial hole coinciding with the pin whereby provision is made for depressing the latter as required to release the roller-box and allow reversal of the collar for the purpose specified.

JOHN WILLIAM FAESSLER. Vitnesses:

WM. L. EDDINGS, W. S. BOULWARE. 

